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Operation method for preventing sintering machine from generating large blocks due to stopping

An operation method and technology of a sintering machine, applied in the metallurgical field, can solve the problems of large sintered ore blocks and blocked buckets, and achieve the effects of eliminating equipment accidents, reducing the links of landing and reverse transportation, and improving the quality of objects.

Active Publication Date: 2019-04-16
ANYANG IRON & STEEL
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  • Abstract
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  • Claims
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Problems solved by technology

However, during the start-up process, accidents of large sintered ore block and blockage are very likely to occur

Method used

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Embodiment Construction

[0023] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0024] An operation method for preventing a sintering machine from shutting down and forming large lumps, which comprises the following steps:

[0025] 1) Fuel ratio control before stopping the sintering machine

[0026] After the scheduled stop time of the sintering machine is determined, the fuel ratio of the sintering machine will be reduced stepwise 30 minutes in advance. It will be divided into three stages, and each stage lasts 10 minutes: the first 10 minutes will reduce the fuel ratio by 0.3-0.4%, and the second On this basis, the fuel ratio is reduced by 0.3-0.4% in the first 10 minutes, and the fuel ratio is reduced by 0.3-0.4% on the basis of the third 10 minutes, reducing the fuel ratio by 0.9-1.2% in total;

[0027] 2) Control of con...

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Abstract

The invention provides an operation method for preventing a sintering machine from generating large blocks due to stopping. The method comprises the following steps that 1), the fuel ratio before stopping the sintering machine is controlled; 2), the conveying quantity before stopping the sintering machine is controlled; 3), the distribution before stopping the sintering machine is controlled; and4), technical pumping stopping and air volume control are performed. By the adoption of the method, when the sintering machine is stopped, the situation that sintering ore forms large blocks due to pumping stopping and subsequent equipment accidents such as hopper blockage are caused can be avoided, so that the stability and continuity of sintering production are improved, and the transportation cost of sintering production is reduced.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to an operation method for preventing a sintering machine from being shut down and forming large lumps. Background technique [0002] In order to improve the continuity and stability of large-scale sintering machine production, try to reduce the start-up and shutdown time, improve the utilization factor of the sintering machine, stabilize the quality of sintering ore, and reduce the impact on the blast furnace. The way, that is, the material on the sintering machine trolley is not empty, and the air supply production can be resumed directly after loading the material. However, during the start-up process, accidents of large sintered ore lumps and blockages are very likely to occur. In the past, in order to prevent large pieces of sinter from blocking the lower hopper of the belt conveyor, the method of starting up the material to the ground was reversed to avoid affecting the su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/16
CPCC22B1/16
Inventor 侯长波付朝云王军峰刘宏伟吕文
Owner ANYANG IRON & STEEL
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